[Bug 23842] [network-admin] Long delay in gnome login

[draknet]

Public bug reported:

Login to Gnome from gdm to full desktop takes 5 minutes. This seems to be due to
"auto lo" missing from /etc/network/interfaces.

I checked this behavior:

1. Without a network cable plugged in the login from completing the gdm login
until full desktop is about 25s. Logout is also just a couple of seconds.
2. With network cable plugged and lo _not_ configured the login time is around 5
minutes! Logout is also some minutes.
3. With network cable plugged and lo configured the login time is again 25s.
Logon again a couple of seconds.

When I work with network-admin sometimes "auto lo" seems to be removed from
/etc/network/interfaces causing the delay.

** Affects: gnome-system-tools (Ubuntu)
     Importance: Medium
     Assignee: Ubuntu Desktop Bugs
         Status: Needs Info

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[network-admin] Long delay in gnome login
https://launchpad.net/bugs/23842